95 GHz methanol maser in Orion-KL

Journal Article · Fri Jul 01 04:00:00 EDT 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/185205· OSTI ID:6833263

Plambeck, R L; Wright, M C.H.

The Hat Creek millimeter interferometer has been used to map 11 different molecular species toward Orion-KL in order to better probe the chemistry and kinematics of that region. A methanol maser with brightness temperature greater than 500 K is found to be coincident with the infrared source IRc6. The maser contributes less than 10 percent of the flux in the methanol line and so was undetected in early observations of this line. Most of the methanol flux originates from a region just south of the infrared source IRc4 and from a plume which extends at least 25 arcsec to the southeast from this peak. Methanol emission is detected from the southwest edge of the 10 km/s ridge cloud, in a direction where a cluster of water masers is found. Thermal CH/sub 3/OH emission appears to be poorly correlated with HDO and HC3N emission. This is expected if methanol is formed by ion-molecule chemistry. 26 references.

• Research Organization: California Univ., Berkeley (USA)
• OSTI ID: 6833263
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 330; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALCOHOLS
AMPLIFIERS
CHEMICAL COMPOSITION
CHEMISTRY
COSMIC RADIO SOURCES
COSMOCHEMISTRY
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
EQUIPMENT
H2 REGIONS
HYDROXY COMPOUNDS
INFRARED RADIATION
MASERS
METHANOL
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
MOLECULES
NEBULAE
ORGANIC COMPOUNDS
RADIATIONS